I think using unless with else is like speaking with double negatives.
我认为使用unless加else条件句就好像在讲双重否定。
No recording is allowed in class unless with prior consent from IFPHK.
未经本学会同意，在课程进行期间一概不得进行任何形式的录影或录音。
I sleep with the window open unless it's really cold.
天气若不很冷，我总开着窗户睡觉。
Take your litter with you unless it is organic.
随身携带你的垃圾，除非它是有机垃圾。
He'll never pay up unless you get tough with him.
你如果不对他强硬点， 他是决不会把钱付清的。
Never struggle with reinventing the wheel unless you have to.
永远不要和做白工斗争，除非你不得不去。
You know how I detest it, unless I am particularly acquainted with my partner.
你知道我一向多么讨厌跳舞，除非跟特别熟的人跳。
You don't see what time it is ever, unless you carry it with you.
你根本不知道究竟到什么时候了，除非你带着时钟。
You can't truly "break" any habit... unless... you replace that habit with another.
你的确不能“击碎”任何习惯……除非……你用另一个习惯来取代它。
The if version just feels easier to process than the version with unless.
使用if的版本比使用unless的版本感觉更容易处理。
Knowledge is useless unless it's effectively Shared with others.
只有有效地和其他人分享知识，知识才有用。
Unless you really know someone well, do not travel with them.
除非你很了解一个人，不然不要和他们一起旅行。
The countries of the world will never deal effectively with this agenda unless they cooperate.
除非世界各国能够同舟共济，否则无法有效处理上述议题。
I'm busy unless I'm blessed with less lesson.
我很忙，除非我很幸运只有少量功课。
What I dislike is when unless is used with an else like so…
我们不喜欢用unless是使用else条件句的时候，就像这样
Unless everyone can give up a little freedom of his own, otherwise no one can get along well with others.
除非人人都放弃一点自己的自由，否则谁也无法和别人愉快地相处。
Ships provide you with comfort unless you get seasick.
为您提供舒适的船只，除非你晕船。
I won't go with you unless my father agrees.
我不会跟你去的，除非我爸爸同意。
That is, unless you're in your room every night, on the phone with your high school sweetheart, who's back home or at another school.
除非你每天晚上把自己锁在宿舍，天天跟你高中的女朋友或者男朋友谈电话，而他又在你的家乡或者在另外一个城市。
We cannot speak unless we have listened, unless we have made our connection with God.
我们如果不倾听，我们如果没有和上帝的连通，我们就无法诉说。
Happiness has little to do with wealth unless you always think you are poor.
快乐基本上和贫富无关，除非你老觉得自己穷。
Be careful with this technique unless you know a little bit about electricity.
小心这种技术，除非你知道一点点关于电力。
Teach your child never to go off with anyone, not even someone they know, unless they're able to contact you to check it's OK.
教你的孩子永远不要私自和别人一起离开，即使那个人是他们认识的人。只有在他们联系你，确认之后才可以。
Unless the work is interwoven with love, it is useless.
除非工作是和爱交织在一起的，否则就是无用的。
Unless the work is interwoven with love, it is useless.
除非工作是和爱交织在一起的，否则就是无用的。
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